Effects of Nd<sub>2</sub>O<sub>3</sub> on Thermal Stability of Nb-22.5Cr Alloy

Liu Weijie; Deng Liping; Ma Binhong; Su Zhijun; Peng Tao; Lu Shiqiang

doi:10.15980/j.tzzz.2017.09.030

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Effects of Nd₂O₃ on Thermal Stability of Nb-22.5Cr Alloy
Vol. 37, Issue 9, Pages: 1040-1044(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.09.030

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[1]刘为杰,邓莉萍,马斌红,苏志军,彭涛,鲁世强.Nd_2O_3对Nb-22.5Cr合金热稳定性的影响[J].特种铸造及有色合金,2017,37(09):1040-1044.

Liu Weijie, Deng Liping, Ma Binhong, et al. Effects of Nd₂O₃ on Thermal Stability of Nb-22.5Cr Alloy. [J]. Special Casting & Nonferrous Alloys 37(9):1040-1044(2017)
[1]刘为杰,邓莉萍,马斌红,苏志军,彭涛,鲁世强.Nd_2O_3对Nb-22.5Cr合金热稳定性的影响[J].特种铸造及有色合金,2017,37(09):1040-1044. DOI： 10.15980/j.tzzz.2017.09.030.

Liu Weijie, Deng Liping, Ma Binhong, et al. Effects of Nd₂O₃ on Thermal Stability of Nb-22.5Cr Alloy. [J]. Special Casting & Nonferrous Alloys 37(9):1040-1044(2017) DOI： 10.15980/j.tzzz.2017.09.030.

摘要

采用机械合金化+热压工艺制备了添加0.125%的Nd

的Nb-22.5Cr合金

并进行了1 200℃下的高温热暴露试验

研究了Nd

对Nb-22.5Cr合金热稳定性的影响。结果表明

的添加在保证Nb-22.5Cr合金有高的致密度和良好断裂韧性的前提下

使得合金热暴露100h后的硬度、室温压缩力学性能的变化幅度减小

表明Nd

的添加可提高Nb-22.5Cr合金的热稳定性。

Abstract

Nb-22.5Cr alloy adding with 0.125% Nd

was prepared by mechanical alloying and hot pressing.The effects of Nd

on thermal stability of Nb-22.5Cr alloy were analyzed through thermal exposure experiment at 1 200 ℃.The results reveal that the Nb-22.5Cr alloy can still remain high relative density and good fracture toughness after thermal exposure for 100 hby adding with Nd

.Meanwhile

the variation rate of properties

such as hardness and room temperature compressive mechanical properties

is decreased gradually.The results indicate that the thermal stability of Nb-22.5Cr alloy can be improved by adding Nd

particles.